Daikin VRV - WII Service Manual page 252

SiUS30-604
Troubleshooting
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Has a
once connected
optional controller for
YES
centralized control been
disconnected or
its address
changed?
NO
Is
the power supply
NO
turned on for all optional
controllers for
centralized
control?
YES
Is
the reset switch
NO
of all optional controllers
for centralized control
set to "normal"?
YES
Is
transmission wiring NO
disconnected or wired
incorrectly?
YES
Troubleshooting (OP: Schedule Timer)
Reset power supply
simultaneously for all optional
controllers for centralized control.
Turn on power supply for all
optional controllers for centralized
control.
Set reset switch to "normal".
Fix the wiring correctly.
The PC board of one of the
optional controllers for centralized
control is defective. Try turning
on/off using each optional
controllers for centralized control,
and replace the PC board of the
one that is unable to control the
indoor unit.
(V2838)
239